How to add logout feature to an OpenID enabled site?

Question

I have recently added OpenID login to my website. But I don\'t know how to add the logout feature.

For example, on clicking the Sign In button I am able to show the

Answer 1

I'm doing my project and stuck in the logout problem I don't know how to do that like you I have solved by reset all of the cookie because i don't know the cookie that set the logging in status i need to know it.